电路如图所示，则电流I为（ ）。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/d7a5da78634441999c41209b8d55198a.png
举一反三
- 电路如图 4 所示，电流 I 为 。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/48dcfd6292e44a329c2d5b04973679d8.png
- 如图5所示电路中，Is=0时，I=2A，则当Is=8时，I=（ ）。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/83ffe24312a04f02a0d192228be2ca97.png
- 图所示电路中，网孔方程为 则R21=（ ）Ω。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/1dc683a3c9e34636b3a2bb2f2004d31b.png
- 图示电路已知电流源的电压为6V，则其电流i为 。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/654edc060b3f4bdfbf9cebb3ec293baa.png
- 图7所示电路，若已知电流I=1A ，则 Uab= ( )http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/51368429af7741c8a3acecb0e789389d.png